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<h1 class="title">textselection.qml 示例文件</h1>
<span class="subtitle">text/textselection/textselection.qml</span>
<!-- $$$text/textselection/textselection.qml-description -->
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<pre class="qml">

  <span class="comment">/****************************************************************************
  **
  ** Copyright (C) 2017 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the examples of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** BSD License Usage
  ** Alternatively, you may use this file under the terms of the BSD license
  ** as follows:
  **
  ** &quot;Redistribution and use in source and binary forms, with or without
  ** modification, are permitted provided that the following conditions are
  ** met:
  **   * Redistributions of source code must retain the above copyright
  **     notice, this list of conditions and the following disclaimer.
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  import QtQuick 2.0

  <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> {
      <span class="name">id</span>: <span class="name">editor</span>
      <span class="name">color</span>: <span class="string">&quot;lightGrey&quot;</span>
      <span class="name">width</span>: <span class="number">640</span>; <span class="name">height</span>: <span class="number">480</span>

      <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> {
          <span class="name">color</span>: <span class="string">&quot;white&quot;</span>
          <span class="name">anchors</span>.fill: <span class="name">parent</span>
          <span class="name">anchors</span>.margins: <span class="number">20</span>

          <span class="type"><a href="qml-qtquick-borderimage.html">BorderImage</a></span> {
              <span class="name">id</span>: <span class="name">startHandle</span>
              <span class="name">source</span>: <span class="string">&quot;pics/startHandle.sci&quot;</span>
              <span class="name">opacity</span>: <span class="number">0.0</span>
              <span class="name">width</span>: <span class="number">10</span>
              <span class="name">x</span>: <span class="name">edit</span>.<span class="name">positionToRectangle</span>(<span class="name">edit</span>.<span class="name">selectionStart</span>).<span class="name">x</span> <span class="operator">-</span> <span class="name">flick</span>.<span class="name">contentX</span><span class="operator">-</span><span class="name">width</span>
              <span class="name">y</span>: <span class="name">edit</span>.<span class="name">positionToRectangle</span>(<span class="name">edit</span>.<span class="name">selectionStart</span>).<span class="name">y</span> <span class="operator">-</span> <span class="name">flick</span>.<span class="name">contentY</span>
              <span class="name">height</span>: <span class="name">edit</span>.<span class="name">positionToRectangle</span>(<span class="name">edit</span>.<span class="name">selectionStart</span>).<span class="name">height</span>
          }

          <span class="type"><a href="qml-qtquick-borderimage.html">BorderImage</a></span> {
              <span class="name">id</span>: <span class="name">endHandle</span>
              <span class="name">source</span>: <span class="string">&quot;pics/endHandle.sci&quot;</span>
              <span class="name">opacity</span>: <span class="number">0.0</span>
              <span class="name">width</span>: <span class="number">10</span>
              <span class="name">x</span>: <span class="name">edit</span>.<span class="name">positionToRectangle</span>(<span class="name">edit</span>.<span class="name">selectionEnd</span>).<span class="name">x</span> <span class="operator">-</span> <span class="name">flick</span>.<span class="name">contentX</span>
              <span class="name">y</span>: <span class="name">edit</span>.<span class="name">positionToRectangle</span>(<span class="name">edit</span>.<span class="name">selectionEnd</span>).<span class="name">y</span> <span class="operator">-</span> <span class="name">flick</span>.<span class="name">contentY</span>
              <span class="name">height</span>: <span class="name">edit</span>.<span class="name">positionToRectangle</span>(<span class="name">edit</span>.<span class="name">selectionEnd</span>).<span class="name">height</span>
          }

          <span class="type"><a href="qml-qtquick-flickable.html">Flickable</a></span> {
              <span class="name">id</span>: <span class="name">flick</span>

              <span class="name">anchors</span>.fill: <span class="name">parent</span>
              <span class="name">contentWidth</span>: <span class="name">edit</span>.<span class="name">paintedWidth</span>
              <span class="name">contentHeight</span>: <span class="name">edit</span>.<span class="name">paintedHeight</span>
              <span class="name">interactive</span>: <span class="number">true</span>
              <span class="name">clip</span>: <span class="number">true</span>

              <span class="keyword">function</span> <span class="name">ensureVisible</span>(<span class="name">r</span>) {
                  <span class="keyword">if</span> (<span class="name">contentX</span> <span class="operator">&gt;=</span> <span class="name">r</span>.<span class="name">x</span>)
                      <span class="name">contentX</span> <span class="operator">=</span> <span class="name">r</span>.<span class="name">x</span>;
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">contentX</span><span class="operator">+</span><span class="name">width</span> <span class="operator">&lt;=</span> <span class="name">r</span>.<span class="name">x</span><span class="operator">+</span><span class="name">r</span>.<span class="name">width</span>)
                      <span class="name">contentX</span> <span class="operator">=</span> <span class="name">r</span>.<span class="name">x</span><span class="operator">+</span><span class="name">r</span>.<span class="name">width</span><span class="operator">-</span><span class="name">width</span>;
                  <span class="keyword">if</span> (<span class="name">contentY</span> <span class="operator">&gt;=</span> <span class="name">r</span>.<span class="name">y</span>)
                      <span class="name">contentY</span> <span class="operator">=</span> <span class="name">r</span>.<span class="name">y</span>;
                  <span class="keyword">else</span> <span class="keyword">if</span> (<span class="name">contentY</span><span class="operator">+</span><span class="name">height</span> <span class="operator">&lt;=</span> <span class="name">r</span>.<span class="name">y</span><span class="operator">+</span><span class="name">r</span>.<span class="name">height</span>)
                      <span class="name">contentY</span> <span class="operator">=</span> <span class="name">r</span>.<span class="name">y</span><span class="operator">+</span><span class="name">r</span>.<span class="name">height</span><span class="operator">-</span><span class="name">height</span>;
              }

              <span class="type"><a href="qml-qtquick-textedit.html">TextEdit</a></span> {
                  <span class="name">id</span>: <span class="name">edit</span>
                  <span class="name">width</span>: <span class="name">flick</span>.<span class="name">width</span>
                  <span class="name">height</span>: <span class="name">flick</span>.<span class="name">height</span>
                  <span class="name">focus</span>: <span class="number">true</span>
                  <span class="name">wrapMode</span>: <span class="name">TextEdit</span>.<span class="name">Wrap</span>
                  <span class="name">textFormat</span>: <span class="name">TextEdit</span>.<span class="name">RichText</span>

                  <span class="name">onCursorRectangleChanged</span>: <span class="name">flick</span>.<span class="name">ensureVisible</span>(<span class="name">cursorRectangle</span>)

                  <span class="name">text</span>: <span class="string">&quot;&lt;h1&gt;Text Selection&lt;/h1&gt;&quot;</span>
                      <span class="operator">+</span><span class="string">&quot;&lt;p&gt;This example is a whacky text selection mechanisms, showing how these can be implemented in the TextEdit element, to cater for whatever style is appropriate for the target platform.&quot;</span>
                      <span class="operator">+</span><span class="string">&quot;&lt;p&gt;&lt;b&gt;Press-and-hold&lt;/b&gt; to select a word, then drag the selection handles.&quot;</span>
                      <span class="operator">+</span><span class="string">&quot;&lt;p&gt;&lt;b&gt;Drag outside the selection&lt;/b&gt; to scroll the text.&quot;</span>
                      <span class="operator">+</span><span class="string">&quot;&lt;p&gt;&lt;b&gt;Click inside the selection&lt;/b&gt; to cut/copy/paste/cancel selection.&quot;</span>
                      <span class="operator">+</span><span class="string">&quot;&lt;p&gt;It's too whacky to let you paste if there is no current selection.&quot;</span>

              }
          }

          <span class="type"><a href="qml-qtquick-item.html">Item</a></span> {
              <span class="name">id</span>: <span class="name">menu</span>
              <span class="name">opacity</span>: <span class="number">0.0</span>
              <span class="name">width</span>: <span class="number">100</span>
              <span class="name">height</span>: <span class="number">120</span>
              <span class="name">anchors</span>.centerIn: <span class="name">parent</span>

              <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> {
                  <span class="name">border</span>.width: <span class="number">1</span>
                  <span class="name">border</span>.color: <span class="string">&quot;darkBlue&quot;</span>
                  <span class="name">radius</span>: <span class="number">15</span>
                  <span class="name">color</span>: <span class="string">&quot;#806080FF&quot;</span>
                  <span class="name">anchors</span>.fill: <span class="name">parent</span>
              }

              <span class="type"><a href="qml-qtquick-column.html">Column</a></span> {
                  <span class="name">anchors</span>.centerIn: <span class="name">parent</span>
                  <span class="name">spacing</span>: <span class="number">8</span>

                  <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> {
                      <span class="name">border</span>.width: <span class="number">1</span>
                      <span class="name">border</span>.color: <span class="string">&quot;darkBlue&quot;</span>
                      <span class="name">color</span>: <span class="string">&quot;#ff7090FF&quot;</span>
                      <span class="name">width</span>: <span class="number">60</span>
                      <span class="name">height</span>: <span class="number">16</span>

                      <span class="type"><a href="qml-qtquick-text.html">Text</a></span> { <span class="name">anchors</span>.centerIn: <span class="name">parent</span>; <span class="name">text</span>: <span class="string">&quot;Cut&quot;</span> }

                      <span class="type"><a href="qml-qtquick-mousearea.html">MouseArea</a></span> {
                          <span class="name">anchors</span>.fill: <span class="name">parent</span>
                          <span class="name">onClicked</span>: { <span class="name">edit</span>.<span class="name">cut</span>(); <span class="name">editor</span>.<span class="name">state</span> <span class="operator">=</span> <span class="string">&quot;&quot;</span> }
                      }
                  }

                  <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> {
                      <span class="name">border</span>.width: <span class="number">1</span>
                      <span class="name">border</span>.color: <span class="string">&quot;darkBlue&quot;</span>
                      <span class="name">color</span>: <span class="string">&quot;#ff7090FF&quot;</span>
                      <span class="name">width</span>: <span class="number">60</span>
                      <span class="name">height</span>: <span class="number">16</span>

                      <span class="type"><a href="qml-qtquick-text.html">Text</a></span> { <span class="name">anchors</span>.centerIn: <span class="name">parent</span>; <span class="name">text</span>: <span class="string">&quot;Copy&quot;</span> }

                      <span class="type"><a href="qml-qtquick-mousearea.html">MouseArea</a></span> {
                          <span class="name">anchors</span>.fill: <span class="name">parent</span>
                          <span class="name">onClicked</span>: { <span class="name">edit</span>.<span class="name">copy</span>(); <span class="name">editor</span>.<span class="name">state</span> <span class="operator">=</span> <span class="string">&quot;selection&quot;</span> }
                      }
                  }

                  <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> {
                      <span class="name">border</span>.width: <span class="number">1</span>
                      <span class="name">border</span>.color: <span class="string">&quot;darkBlue&quot;</span>
                      <span class="name">color</span>: <span class="string">&quot;#ff7090FF&quot;</span>
                      <span class="name">width</span>: <span class="number">60</span>
                      <span class="name">height</span>: <span class="number">16</span>

                      <span class="type"><a href="qml-qtquick-text.html">Text</a></span> { <span class="name">anchors</span>.centerIn: <span class="name">parent</span>; <span class="name">text</span>: <span class="string">&quot;Paste&quot;</span> }

                      <span class="type"><a href="qml-qtquick-mousearea.html">MouseArea</a></span> {
                          <span class="name">anchors</span>.fill: <span class="name">parent</span>
                          <span class="name">onClicked</span>: { <span class="name">edit</span>.<span class="name">paste</span>(); <span class="name">edit</span>.<span class="name">cursorPosition</span> <span class="operator">=</span> <span class="name">edit</span>.<span class="name">selectionEnd</span>; <span class="name">editor</span>.<span class="name">state</span> <span class="operator">=</span> <span class="string">&quot;&quot;</span> }
                      }
                  }

                  <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> {
                      <span class="name">border</span>.width: <span class="number">1</span>
                      <span class="name">border</span>.color: <span class="string">&quot;darkBlue&quot;</span>
                      <span class="name">color</span>: <span class="string">&quot;#ff7090FF&quot;</span>
                      <span class="name">width</span>: <span class="number">60</span>
                      <span class="name">height</span>: <span class="number">16</span>

                      <span class="type"><a href="qml-qtquick-text.html">Text</a></span> { <span class="name">anchors</span>.centerIn: <span class="name">parent</span>; <span class="name">text</span>: <span class="string">&quot;Deselect&quot;</span> }

                      <span class="type"><a href="qml-qtquick-mousearea.html">MouseArea</a></span> {
                          <span class="name">anchors</span>.fill: <span class="name">parent</span>
                          <span class="name">onClicked</span>: {
                              <span class="name">edit</span>.<span class="name">cursorPosition</span> <span class="operator">=</span> <span class="name">edit</span>.<span class="name">selectionEnd</span>;
                              <span class="name">edit</span>.<span class="name">deselect</span>();
                              <span class="name">editor</span>.<span class="name">state</span> <span class="operator">=</span> <span class="string">&quot;&quot;</span>
                          }
                      }
                  }
              }
          }
      }

      <span class="name">states</span>: [
          <span class="type"><a href="qml-qtquick-state.html">State</a></span> {
              <span class="name">name</span>: <span class="string">&quot;selection&quot;</span>
              <span class="type"><a href="qml-qtquick-propertychanges.html">PropertyChanges</a></span> { <span class="name">target</span>: <span class="name">startHandle</span>; <span class="name">opacity</span>: <span class="number">1.0</span> }
              <span class="type"><a href="qml-qtquick-propertychanges.html">PropertyChanges</a></span> { <span class="name">target</span>: <span class="name">endHandle</span>; <span class="name">opacity</span>: <span class="number">1.0</span> }
          },
          <span class="type"><a href="qml-qtquick-state.html">State</a></span> {
              <span class="name">name</span>: <span class="string">&quot;menu&quot;</span>
              <span class="type"><a href="qml-qtquick-propertychanges.html">PropertyChanges</a></span> { <span class="name">target</span>: <span class="name">startHandle</span>; <span class="name">opacity</span>: <span class="number">0.5</span> }
              <span class="type"><a href="qml-qtquick-propertychanges.html">PropertyChanges</a></span> { <span class="name">target</span>: <span class="name">endHandle</span>; <span class="name">opacity</span>: <span class="number">0.5</span> }
              <span class="type"><a href="qml-qtquick-propertychanges.html">PropertyChanges</a></span> { <span class="name">target</span>: <span class="name">menu</span>; <span class="name">opacity</span>: <span class="number">1.0</span> }
          }
      ]
  }

</pre>
</div>
<!-- @@@text/textselection/textselection.qml -->
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